This made my 84 run better.
Thread Starter
Melting Slicks
Joined: May 2005
Posts: 3,134
Likes: 11
From: At the St. Louis Playboy club.
This made my 84 run better.
Removing the rubbers between the hood & the aircleaner cover.
It pulled better, seat of pants messurement,& it sounded better.
Ive never seen any reports on this mod.
It pulled better, seat of pants messurement,& it sounded better.
Ive never seen any reports on this mod.
Drifting
Joined: Aug 2000
Posts: 1,316
Likes: 0
From: Houston, TX
That is the air duct between the air intake at the front of the car channeled thru the ducting to the air cleaner, now allowing hot air into the intake. Does not seem that this would add any power?
Thread Starter
Melting Slicks
Joined: May 2005
Posts: 3,134
Likes: 11
From: At the St. Louis Playboy club.
I think the power gain is from removeing the restriction caused by the channeling.
Where the hood meets the radiator cover area, there is just 2 small holes for air to get thru.Those 2 holes are smaller than the throttle bodies so it makes perfect sense.
Where the hood meets the radiator cover area, there is just 2 small holes for air to get thru.Those 2 holes are smaller than the throttle bodies so it makes perfect sense.
Race Director
Joined: Sep 2000
Posts: 17,298
Likes: 33
From: The Top of Utah
Open up the hole in the radiator cover to match the hole in the hood. I have run mine with and without the air cleaner assembly, and noticed no appreciable difference. I have to admit I haven't done back to back 1/4 mile tests, which I easily could have.
RACE ON!!!
RACE ON!!!
Thread Starter
Melting Slicks
Joined: May 2005
Posts: 3,134
Likes: 11
From: At the St. Louis Playboy club.
Originally Posted by CFI-EFI
Open up the hole in the radiator cover to match the hole in the hood. I have run mine with and without the air cleaner assembly, and noticed no appreciable difference. I have to admit I haven't done back to back 1/4 mile tests, which I easily could have.
RACE ON!!!
RACE ON!!!
Race Director
Joined: Sep 2000
Posts: 17,298
Likes: 33
From: The Top of Utah
Not that I recall. I did that years ago. I've messed with the cooing system a little too. Now I have a 22" X 8" trans cooler in front of the condenser and the radiator. It never tops 210°, sittlng still and idling.
RACE ON!!!
RACE ON!!!
Race Director
Joined: Dec 2000
Posts: 17,551
Likes: 26
From: El Paso Texas
Originally Posted by 7thvet
Did opening up that hole raise the engine temp? It seems less air would be forced thru the radiator.
I've done the cold air mod (cutting open the rad shroud to match hood opening)
Made absolutely no difference in operating temps, and I live in a VERY hot climate.
No SOTP power difference either.
I replaced my hood to air cleaner housing seals with a new set that have a "bridge" across the middle to prevent them from collapsing. That DID make a difference, as mine were collapsed to the point that they were restricting flow.
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Drifting
Joined: Aug 2000
Posts: 1,316
Likes: 0
From: Houston, TX
Got a pic of the "bridge", and where did you get it, sounds like something that could work. After posting my previous reply, I thought there could be a problem with a collapsed duct that would restrict air flow
Race Director
Joined: Dec 2000
Posts: 17,551
Likes: 26
From: El Paso Texas
Originally Posted by HWoods
Got a pic of the "bridge", and where did you get it, sounds like something that could work. After posting my previous reply, I thought there could be a problem with a collapsed duct that would restrict air flow
If memory serves me correctly, I bought them off eBay. They are brand new pieces being reproduced with the bridge as an integral piece of the rubber housing.
I bought them about 3 years ago. I will try to dig through my Corvette file and find a receipt for them.
Last edited by Frizlefrak; Jul 19, 2005 at 01:43 AM.
Burning Brakes
Joined: Sep 2003
Posts: 875
Likes: 0
From: Louisville KY
Originally Posted by 7thvet
I think the power gain is from removeing the restriction caused by the channeling.
Where the hood meets the radiator cover area, there is just 2 small holes for air to get thru.Those 2 holes are smaller than the throttle bodies so it makes perfect sense.
Where the hood meets the radiator cover area, there is just 2 small holes for air to get thru.Those 2 holes are smaller than the throttle bodies so it makes perfect sense.
Burning Brakes
Joined: Sep 2003
Posts: 875
Likes: 0
From: Louisville KY
Originally Posted by CFI-EFI
Not that I recall. I did that years ago. I've messed with the cooing system a little too. Now I have a 22" X 8" trans cooler in front of the condenser and the radiator. It never tops 210°, sittlng still and idling.
RACE ON!!!
RACE ON!!!
Race Director
Joined: Sep 2000
Posts: 17,298
Likes: 33
From: The Top of Utah
I would have thought so. So for both tests the engine was getting hot (but not as bad as closed hood, hot) air. The big difference was the air being straightened by flowing through the filter and the approach to the TBs caused by the air cleaner base.
RACE ON!!!
RACE ON!!!
